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RE: Passwords with Lan Manager (LM) under Windows
From: "Craig Wright" <cwright () bdosyd com au>
Date: Thu, 22 Sep 2005 15:05:58 +1000

Further to the last post 
There are a number of issues with NTLMv2 and legacy applications such as
Windows RAS that cause lower levels of authentication

I still say that Kerberos or IPsec based auth is the best policy in
windows. LanMan, NTLMv1 or V2 are vulnerable.

Precomputed tables may have been uncommon 12 months ago - but that was
then and this is now.

Cain & Abel will use sorted Rainbow Tables for Cryptanalysis attacks

Craig 

-----Original Message-----
From: Thor (Hammer of God) [mailto:thor () hammerofgod com] 
Sent: 22 September 2005 12:00
To: Craig Wright; pand0ra.usa () gmail com; pen-test () securityfocus com
Subject: Re: Passwords with Lan Manager (LM) under Windows


----- Original Message -----
From: "Craig Wright" <cwright () bdosyd com au>
To: <pand0ra.usa () gmail com>; <pen-test () securityfocus com>
Sent: Wednesday, September 21, 2005 12:32 PM
Subject: RE: Passwords with Lan Manager (LM) under Windows


Even NTLMv2  will break the hashing into chunks which are able to be 
individually broken down.

I'm not sure what you mean... NTLMv2 uses a single 128bit key for the
hash, 
challenge and response...  Or are you referring to the NTLM2 session 
response key (56+56+16)? If so, that is not the same thing as NTLMv2...
Can 
you elaborate please ?

t


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